Dedpossum
New Member
Good afternoon!
I have quite the puzzle here.
I have installed a hydronic system for a very small house (900 sf).
I have a total of 1200 feet of HE 1/2 pex broken into 4 - 300 foot loops.
I have a taco 007 w/ IFC circulator pump with arrow pointing towards the supply manifold (hotwater to the loops).
I also isolated each loop to make sure the supply matches the return, and they do.
If I use fresh water and vent the return manifold into the drain everything runs awesome.
There is no air in the lines
When I attempt to cycle the system using the Taco 007 there is no circulation. I end up with a large amount of pressure in the return manifold. So much so that the valves are held shut by the pressure. And I have to relieve the pressure through the end cap of the manifold.
I installed another back flow preventer between the boiler and the Taco and the problem remains the same.
I am really scratching my head here because it truly seams like I've done everything "right". So I think I am overlooking the obvious. I have enough pipe, fittings and time to redo whatever is necessary.
Advice would be most welcome!
Sincerely,
Ded
P.s yes nothing is supported yet.
I have quite the puzzle here.
I have installed a hydronic system for a very small house (900 sf).
I have a total of 1200 feet of HE 1/2 pex broken into 4 - 300 foot loops.
I have a taco 007 w/ IFC circulator pump with arrow pointing towards the supply manifold (hotwater to the loops).
I also isolated each loop to make sure the supply matches the return, and they do.
If I use fresh water and vent the return manifold into the drain everything runs awesome.
There is no air in the lines
When I attempt to cycle the system using the Taco 007 there is no circulation. I end up with a large amount of pressure in the return manifold. So much so that the valves are held shut by the pressure. And I have to relieve the pressure through the end cap of the manifold.
I installed another back flow preventer between the boiler and the Taco and the problem remains the same.
I am really scratching my head here because it truly seams like I've done everything "right". So I think I am overlooking the obvious. I have enough pipe, fittings and time to redo whatever is necessary.
Advice would be most welcome!
Sincerely,
Ded
P.s yes nothing is supported yet.